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Loss of Music Sound Samples After Recording

311 Views 11 Replies Latest reply: Feb 12, 2013 7:18 AM by Bob Edmonson RSS
Bob Edmonson Calculating status...
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Feb 5, 2013 7:51 AM

After recently recording a track, the sound track information - wave forms - on the track went to a straight line when I stopped recording.   The recording was still on the track, but all I could see was a straight line where the wave forms were previously.  I went to the Sampler, & clicked on "Normalize" - which fixed the issue on that track.  But that did not work on every track.   Have I inadverently changed something in the recording dialogue box? - I've checked all the settings, and nothing seems different.   How do I change this problem so I don't have to go to the sampler and Normalize every track after I've recorded it?  


I've watched quite a few Mac Pro Video's on Logic Pro, but I haven't found a section that explains the "piano roll."  Anyone have a link where I can read up on it or explain it?



MacBook Pro, OS X Mountain Lion (10.8.1), 2.4 GHz Intel Core Duo - 4 GB 667 MHz
  • gen_ Level 2 Level 2 (335 points)
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    Feb 5, 2013 11:10 AM (in response to Bob Edmonson)

    If you had to normalize in order to see your waveform, theny ou are recording at far to low an input volume. It's possilbe that your hardware is just gating out all the vlume below a certain level.


    Also try not to use large font, it hurts my eyes.

  • Pancenter Level 5 Level 5 (7,505 points)
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    Feb 11, 2013 9:03 PM (in response to Bob Edmonson)



    Go into Preferences/Audio  see the setting for  "Recording Delay"  This should be set to 0 (zero)


    If that's not it, report back.

  • Eriksimon Level 6 Level 6 (10,395 points)
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    Feb 12, 2013 3:03 AM (in response to Pancenter)

    That's it; that's almost always it, with this issue. It is one of the "regulars".

    What in fact happens is that the recording is fine, levels are fine, it's just that Logic refuses to create a graphical wavefrom overview. What also helps (DON"T normalize, that's destructive and unnecessary, the waveform appearing is just a "side-effect" of it, so to speak) is Options > Audio > Refresh Overview(s). But, to not get the issue in the first place, set the recording delay (back) to 0, as Pancenter suggested.

  • Eriksimon Level 6 Level 6 (10,395 points)
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    Feb 12, 2013 7:01 AM (in response to Bob Edmonson)

    Everything seems fine, the only setting you may change (although it may not change this issue at all) is the number of Processing Threads. Instead of automatic, set it to the highest available number.

    Also not related, but important: don't clip your inputs, meaning the loudest peak should not exceed -6 dBfs.


    This overview issue has been reported before, most of the time it is the rec delay set to anything other than 0 (which is not the case with you) and sometimes the issue clears up, never to return, with a simple Mac reboot. And if all else fails, you can always use the Options > Audio > Refresh Overview(s) command afterwards.

  • Eriksimon Level 6 Level 6 (10,395 points)
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    Feb 12, 2013 7:10 AM (in response to Bob Edmonson)

    It is not something to be "checked", it is a command that when chosen is applied to whatever audio region(s) is/are selected at that moment. It is meant to be used after audio files have been destructively edited in the Sample Editor, or when a used audio file was altered in any other way.

    Normally you shouldn't need it. Fact is that you waveforms shpould appear when you stop recording. Glitchy wavefrom drawing during recording is normal behaviour in Logic - graphics get low priority, correct audio recording gets top priority.

  • Eriksimon Level 6 Level 6 (10,395 points)
    Currently Being Moderated
    Feb 12, 2013 7:14 AM (in response to Bob Edmonson)

    Not sure about that one track. Are you saying it didn't get an overview refresh even though it was selected when you activated Refresh Overview(s)?


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